Is this tied to sieve mesh?

No — pure unit conversion; mesh openings still come from weave tables.

Need tighter tolerances?

Quote both µm and inches with explicit significant figures.

Useful when bouncing between metric particle data and imperial specifications.

Microns (µm)

Inches (in)

0.0059055118

How many inches is 100 µm?: Roughly 0.003937 inches.
Is this tied to sieve mesh?: No — pure unit conversion; mesh openings still come from weave tables.
Need tighter tolerances?: Quote both µm and inches with explicit significant figures.